25 synthesised layers
Rain, thunder, café, train, wind, fire, birds, ocean, noise colours, forest, typing, clock, cat purr, cosmic drone, crickets, stream, wind chimes, binaural beat, heartbeat, fan, vinyl crackle, microphone and more — every one generated in the browser.
36 curated presets
Sleep, Focus, Relax, Nature and Urban moods — from Monsoon Evening to Deep Focus. Each preset carries a matching mood theme, and “Surprise me” picks a random mix.
WAV & Opus export
Render up to 10 minutes as lossless WAV (16- or 24-bit) or compact Opus. Exports are peak-normalised and built from crossfaded tiles, so nothing loops audibly.
Offline & installable
One 137 KB HTML file with no audio files and no network calls. Open it with the network off and it still works; add it to your home screen as an app.
Private by design
No analytics, no telemetry, no accounts, no cloud. Your mixes, custom sounds and settings stay on your own device. The only optional request is the Opus encoder you choose to download.
Three languages
The whole interface — layer names, presets and messages — ships in English, हिन्दी and ગુજરાતી, switchable any time from the More menu.